Value of CT-angiography (CTA) in patients with intracranial aneurysms. Comparison with MR-angiography (MRA) and digital subtraction angiography (DSA)

In a clinical study we examed patients with intracranial aneurysms. We compared CT-angiography (CTA) with MR-angiography (MRA) and Digital Substruction angiography (DSA) and evaluated the ability of the compared techniques to identify the neck of aneurysms and to visualize small arterial branches. The sensitivity of CTA and DSA to detect small intracranial aneurysms is higher compared with MRA. In giant aneurysms CTA using Volume Rendering Techcnique (VRT) can be superior to DSA and MRA. CTA using VRT offers very interesting new aspects in the diagnosis of intracranial aneurysms. CTA can help to better plan the therapeutic procedure in patients with giant aneurysms.